Gwendolyn Sontheim Meyer (born 1961/62) is an American billionaire heiress and equestrian.
Biography
Early life
She is a great-great-granddaughter of William Wallace Cargill, the founder of Cargill. Her late mother was Marion MacMillan Pictet.
Career
A show jumper, she won the Prix Credit Suisse at the Geneva International Horse Show in 2011. She also sponsors dressage.
